爆炸荷载下钢筋混凝土梁的变形和破坏  

Deformation and failure of reinforced concrete beams under blast loading

作　　者：李猛深[1,2] 李杰[2,3] 李宏[1] 施存程[4] 张宁[2] 

机构地区：[1]沈阳军区司令部工程科研设计所,辽宁沈阳110162 [2]解放军理工大学爆炸冲击防灾减灾国家重点实验室,江苏南京210007 [3]南京理工大学机械工程学院,江苏南京210009 [4]第二炮兵指挥学院,湖北武汉430012

出　　处：《爆炸与冲击》2015年第2期177-183,共7页Explosion and Shock Waves

基　　金：国家自然科学基金青年科学基金项目(51308543);中国博士后科学基金项目(2014M552688)

摘　　要：利用爆炸压力模拟器进行钢筋混凝土简支梁爆炸冲击实验,详细介绍了实验设计,通过实验系统分析了钢筋混凝土(RC)梁变形破坏特征以及钢筋作用机理和对变形破坏的影响,并建立了RC梁的分离式有限元模型,利用LS-DYNA分析了实验过程,对计算结果与实验结果进行了比较,分析了误差产生的原因,得到了爆炸冲击荷载作用下RC梁的损伤破坏特征和机理,可为毁伤评估和结构抗爆设计提供参考。With explosion pressure simulator, blast experiments were carried out to investigate the de- formation and damage of concrete （RC） beams. The experimental design and parameters are described in detail. The experimental result shows the failure characteristics of RC beams and the role that re- bars act. With LS-DYNA, three-dimensional separated finite element models of RC beams were es- tablished to simulate the experiment. The simulation and experimental results are contrasted to inves- tigate the damage mechanism and failure characteristics. The article also figures out the reason of simulation errors. The research provides reference for damage assessment and anti-blast design.

关 键 词：爆炸力学 破坏特征 有限元 钢筋混凝土梁 爆炸荷载 

分 类 号：O383.2[理学—流体力学]